You are asking the wrong question. Switching on IPv6 doesn’t require you to switch off IPv4. You can but you don’t have to. I find it sad that ISPs still think IPv4 and IPv6 are mutually exclusive. Nobody is asking for people to switch off IPv4. They are only asking that you enable IPv6 so they can reach you without having to run the traffic though a CGN 44 or 64. For most eyeball networks the majority of your traffic will be IPv6 the moment you turn IPv6 on as most of the large content providers offer IPv6 and implementations prefer IPv6. Mark -- Mark Andrews
On 20 Jun 2025, at 06:13, Forrest Christian (List Account) via NANOG <nanog@lists.nanog.org> wrote:
I see numerous statistics from Google and similar sources that indicate the percentage of end users who are IPv6 native. What I'm missing are statistics going the other way - what percentage of sites (or endpoints that customers regularly connect to) are IPv6-native, from a total traffic perspective?
That is, if I switch to IPv6 on my eyeball network, how much of my existing traffic will I have to CGNAT in some way to reach the IPv4-only network?
We have sufficient IPv4 address resources to stick with IPv4 for the foreseeable future. However, at some point, the percentage of traffic using IPv6 becomes so high that the reasons not to move become less significant. For example, the CGNAT box becomes significantly smaller, as most of the traffic should flow around it on IPv6.
-- - Forrest _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog@lists.nanog.org/message/ZWNAGD3G...